<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
  <style>
    #d1{
      width: 100px;
      height: 100px;
      border: 10px outset red;
        border-radius: 100px;
    }
    span{
        border-right: 1px solid blue;
    }
    #d2{
        width: 150px;
        height: 150px;
        border: 1px outset red;
        padding-top: 50px;
        padding-left: 50px;
    }
    ul{
        padding: 0;
    }
  </style>
</head>
<body>
<ul>
    <li>1</li>
    <li>1</li>
    <li>1</li>
    <li>1</li>
    <li>1</li>
    <li>1</li>
</ul>
<div id="d2">内边距测试</div>
<div id="d1">边框测试</div>
<span>边框测试</span>
</body>
</html>